Blasting the "circus" he said: "As undercard fights start to take form, athletic commissions give their blessings in exchange for millions of dollars, and the fighters start counting even more cash, one group will eventually be left to make sure this farce doesn’t occur – we, the fans, who are the lifeblood of our sport ... Our sport might not ever recover.”

McGregor was stripped of his featherweight title in November as he dedicated his attention to pursuing the Mayweather payday.

Later in the same month he obtained a professional boxing licence from the California State Athletic Commission.